Siheyuan: the Understanding Is Incredible, Turn It in and Get It Back Ten Thousand Times

Chen Yuan traveled to the world of Qinman Siheyuan. I thought I was going to have a battle of wits and courage with the beasts in the yard. But in the end, he accidentally awakened to the system of returning 10,000 times the amount! As long as you hand over the items to the state, you can directly return 10,000 times to yourself through the system! Not only that! While returning items. Chen Yuan can also directly obtain the upgrading knowledge of related items! Hand over a pound of wheat. Not only did the system directly return 10,000 kilograms, it also gave Chen Yuan the research and development technology for hybrid wheat! Turn in a shotgun. Not only will the system directly return 10,000 rifles, it will also give Chen Yuan additional knowledge on the research and development of automatic rifles! … After realizing this. Chen Yuan suddenly had a bold idea! "Then what if I hand over nuclear bombs, aircraft carriers, and photolithography machines...?!" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.